text: /**
   * Copyright 2018 The AMP HTML Authors. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS-IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*eslint no-unused-vars: 0*/
  
  
  /**
   * The controller that the iframe must implement in order to provide
   * the access features.
   * See `AmpAccessIframeApi` class for more details.
   * @interface
   */
  export class AccessController {
  
    /**
     * Check origin, protocol and configuration and initialize controller.
     * @param {string} origin
     * @param {string} protocol
     * @param {!JsonObject} config
     * @return {!Promise|undefined}
     */
    connect(origin, protocol, config) {}
  
    /**
     * Authorize document.
     * @return {!Promise}
     * TODO(dvoytenko): define args and result.
     */
    authorize() {}
  
    /**
     * Pingback document view.
     * @return {!Promise}
     * TODO(dvoytenko): define args.
     */
    pingback() {}
  }
  